Welcome to the wonderful world of Web Performance

Measuring performance shouldn’t be hard: you should be able to have full control of your metrics, own your own data and you should be able to do it without paying top dollars.

That’s why we created sitespeed.io.

Docker

Use our Docker container to get an environment with Firefox, Chrome, XVFB and sitespeed.io up and running as fast as you can download them. They work extremely well together with Graphite/InfluxDB and Grafana.

What tool should I use?

If you want to measure the performance and are only interested in timing metrics, you should focus on using Browsertime. If you want it all: use sitespeed.io. It is the main tool that uses all sitespeed.io tools and add supports for testing multiple pages as well as adds the ability to report the metrics to a TSDB (Graphite and InfluxDB).

We believe in privacy

We take your privacy really serious: Our documentation site, our dashboard and our compare tool do not use any tracking software at all (no Google Analytics or any other tracking software). None of the sitespeed.io tools call home.

But beware: Chrome and Firefox can call home (we know for fact that they both do). We would love PRs and tips how to make sure browsers don’t call home when you run your tests.

What does it cost?

Sitespeed.io is Open Source and totally free. But what does it cost to have an instance of sitespeed.io up and running?

If you don’t run on your own servers, we recommend running on Digital Ocean optimized droplets 2 vCPUs or on AWS c5.large, storing the data at S3. On one instance you can run something like 80000+ runs per month for a total cost of $695 per year.

Browsertime 4.0

Browsertime 4.0 supports testing multiple pages within the same browser session and scriptinmg. You should use Browsertime if you want a raw JSON result for timings and/or execute your own JavaScript. Browsertime is perfect if you wanna build your own performance tool, as VoxMedia did when they created Lightbike built on top of Browsertime.

Thank you!

Sitespeed.io is built upon Open Source tools, we have a special place in our hearts for those projects (see the full list):